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Montana Field Guides

Sandberg's Biscuitroot - Lomatium sandbergii

Native Species

Global Rank: G4
State Rank: S4
(see State Rank Reason below)
C-value: 6

Agency Status


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State Rank Reason (see State Rank above)
Numerous collections from Flathead, Glacier, Lake, Lewis & Clark, Lincoln, Mineral, Missoula, Pondera and Powell counties.

Probably currently secure in its high elevation habitats. Some populations are within well-protected landscapes (wilderness and National Parks).

Regional endemic of the Northern Rockies and SE Shining Mountains (Purcell, Coeur d'Alene, St. Joe, Cabinet Ranges).
General Description
Plants subacaulescent to caulescent from a slender taproot. Stems ascending, 1–15 cm in fruit. Herbage glabrous to scabrous. Leaf blades lanceolate to ovate in outline,1–7 cm long, 2 or 3 times pinnate; ultimate segments linear, 1–4 mm long; petiole sheaths scarious. Umbels: peduncles 2–15 cm long; rays unequal 1–7 cm long; involucel bracts filiform 2–3 mm long. Flowers yellow. Mericarps scaberulous, narrowly elliptic, 5–8 mm long; marginal wings ca. 0.5 mm wide; oil tubes 4 to 5 per interval (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Diagnostic Characteristics
No other high-elevation Lomatium in Montana has ferny/finely divided leaves or puberulent fruits. Could be confused with Lomatium foeniculaceum, both having puberulent fruits, but L. foeniculaceum is in low elevation sites and doesn't produce stems that bear leaves up above ground levels.

Species Range

Range Comments
Endemic to northwest MT, adjacent ID, BC and AB (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 33

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)

Shallow soil of outcrops, open slopes, ridges in grasslands, fellfields, forest openings; upper montane to alpine (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Web Search Engines for Articles on "Sandberg's Biscuitroot"
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Citation for data on this website:
Sandberg's Biscuitroot — Lomatium sandbergii.  Montana Field Guide.  .  Retrieved on , from